<span><span>2 <span>Alo</span></span> + <span>3 <span>So</span></span> → <span>Al2IIIS3-II
</span></span><span>Alo</span> - <span>3 e-</span> → <span>AlIII</span><span>
So</span> + <span>2 e-</span> → <span>S<span>-II
</span></span>
Вещество А =H2O
Газ Б =Н2
Газ В= О2
Черный порошок CuO
2H2O=2H2+O2
CuO+H2=Cu+H2O
Поправка:Cu3(PO4)2
Фосфат меди 2
А)-4) Zn + 2HCl -> ZnCl2 + H2
Б)-5) Zn(OH)2 + 2HCl -> ZnCl2 + 2H2O
В) - 2) ZnCl2 + K2S -> ZnS + 2KCl